99742612 has 6 divisors (see below), whose sum is σ = 174549578. Its totient is φ = 49871304.

The previous prime is 99742541. The next prime is 99742613. The reversal of 99742612 is 21624799.

It can be written as a sum of positive squares in only one way, i.e., 90706576 + 9036036 = 9524^2 + 3006^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99742613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12467823 + ... + 12467830.

Almost surely, 2^99742612 is an apocalyptic number.

It is an amenable number.

99742612 is a deficient number, since it is larger than the sum of its proper divisors (74806966).

99742612 is a wasteful number, since it uses less digits than its factorization.

99742612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24935657 (or 24935655 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 99742612 is about 9987.1223082528. The cubic root of 99742612 is about 463.7603114511.

The spelling of 99742612 in words is "ninety-nine million, seven hundred forty-two thousand, six hundred twelve".